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Size- and shape-controlled synthesis and assembly of a silver nanocomplex in UV-irradiated TSA solution

机译:紫外线辐照的TSA溶液中银纳米复合物的尺寸和形状控制的合成与组装

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摘要

In this paper we describe the size-controlled synthesis of a silver nanocomplex based on the reduction of silver nitrate (AgNO3) by UV-irradiated tungstosilicate acid [H-4(SiW12O40), TSA] solution. This method allows the synthesis of ellipsoidal particles with an average size that is tunable between 2.4 and 84 nm by varying the molar ratio of silver nitrate to TS, the pH of the reaction solution and the reaction temperature. Silver nanorods can be formed from the ellipsoidal nanopartticles by controlling the aging time. The formation mechanism of these nanorods is also discussed. The nanoparticles are characterised by UV/Vis spectroscopy, FTIR spectroscopy, XRD analysis, XPS, electron diffraction (ED), TEM, and with a Zetasizer instrument. (c) Wiley-VCH Verlag GmbH & KGaA.
机译:在本文中,我们基于紫外线辐射的钨硅酸[H-4(SiW12O40),TSA]溶液还原硝酸银(AgNO3),描述了一种尺寸可控的纳米银复合物的合成方法。通过改变硝酸银与TS的摩尔比,反应溶液的pH值和反应温度,该方法可以合成平均粒径在2.4和84 nm之间可调的椭圆形颗粒。通过控制老化时间,可以由椭圆形的纳米颗粒形成银纳米棒。还讨论了这些纳米棒的形成机理。通过UV / Vis光谱,FTIR光谱,XRD分析,XPS,电子衍射(ED),TEM和Zetasizer仪器表征纳米颗粒。 (c)Wiley-VCH Verlag GmbH&KGaA。

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